通过在目标函数中增加先验知识约束，我们可以解决波阻抗反演的病态问题及带限问题。
By introducing the prior information constraint in the objective function, we can solve the ill-posed problem and band-limited problem for the impedance inversion.
在P波入射时，地下同一点产生的P P波和P SV波是入射角、界面两侧纵波阻抗和横波阻抗的函数，并且两者是耦合的。
When P wave incidents, The P-P wave and P-SV wave created from the same point are both functions of incidence angle, and of the media above and below the interface, Vp and Vs they are coupled.
根据砂岩孔隙度与波阻抗之间的函数关系，可以利用砂岩波阻抗估算砂岩孔隙度。
Based on the relationship between sand porosity and wave impedance, we can use the sand wave impedance to estimate the sand porosity.
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